Adjustable Map sensor

does anyone use an adjustable MAP sensor? how do they work? is it worth $135 ?

Wow! $135! I think I will go into buisness! I paid <$15 in parts!
Do a search and build your own.
It fools the ECU into thinking the MAP is different then it is and causes the A/F to increase or decrease based on the voltage Setting. I used it to pass emissions testing after installing K&N + Borla exhaust (header all the way back).

i tried searching but the only thing that comes up stuff about O2 sensors.